Jan Stenberg:

The single biggest bad thing that Young has seen during the last ten years is the common anti-pattern of building a whole system based on Event sourcing. That is a really big failure, effectively creating an event sourced monolith. CQRS and Event sourcing are not top-level architectures and normally they should be applied selectively just in few places.

Young also believes there will be more use of Process managers, especially with more and more use of Actors since they for him make perfect Process managers. He describes an Actor framework as a Process manager framework.